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Science Chapter 2
Science chapter 2 (Sound) lessons 1-5 vocabulary flashcards
Term | Definition |
---|---|
Density | How much matter or mass there is in a given amount of space or volume |
Pitch | A description of how high or low the sound seems to a person |
Loudness | Describes your awareness of the energy of a sound |
Intensity | The amount of energy a sound wave carries per second through a unit area |
Decibel (dB) | The unit that is used to compare the loudness of different sounds |
Music | A set of notes that combine in patterns that are pleasing |
Fundamental tone | The lowest natural frequency |
Overtone | The highest natural frequencies |
Ear canal | A narrow region leading from the outside of the human ear to the eardrum |
Eardrum | A small, tightly stretched, drum like membrane |
Cochlea | A liquid-filled cavity shaped like a snail shell that is lined with receptor cells that respond to sound |
Echolocation | The use of reflected sound waves to determine distances or to locate objects |
Ultrasound | Sound waves with frequencies above the normal human range of hearing |
Sonar | A system that uses reflected sound waves to detect and locate objects under water |
Sonogram | An image formed using reflected ultrasound waves |